Germany vows to work with partners on Iran nuclear deal

The German government on Friday vowed to work for continued global unity if  US President Donald Trump announces that he will not certify Iran's compliance with a 2015 nuclear accord negotiated by world powers, as expected.

"We have a great interest in the continuation of this international unity. If an important country like the United States comes to a different conclusion as appears to be the case, we will work even harder with other partners to maintain this cohesion," government spokesman Steffen Seibert told reporters.

Trump is to deliver a speech at 12:45 p.m. EDT (1645 GMT) to announce a confrontational new approach to US policy toward Iran. In a big shift, he is expected to say he will not certify Iran's compliance with the nuclear deal.